Stove.



F. S. LANG.

STOVE. V APPLIUATION FILED MAR. 20, 1909.

990,884. Patented May 2, 1911.

WITNESSES: M 6W,

11v VENTOR.

- the front casing wall to provide a furnace useful Improvements in Stoves, of which the following is a specification.

cooking purposes and to promote the com 15, 15' and. 15". The wall 12is continued,

casing wall which is provided with an opening 17 making communication with an.

' ranged frame comprised of end members 20 TED STA- FRANK S. LANG, SEATTLE, WASHINGTON.

' srovn.

To all whom. it may concern:

Be it known that I, FRANK S. LANG, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented certain new and This invention relates to cooking stoves. Its object is to furnish improved means whereby the heat products derived from the fire are utilized to a maximum extent for bust-ion of the fuel sothat an extremely effeetive and economical fire may be maintained.

The invention consists in the novel construction and combination of the parts thereof in a stove .as will appear in the following description taken with reference to the accompanying drawings, whereint Figure 1 is a longitudinal vertical section of a stove constructed in accordance with my invention. Fig. 2 is a cross sectional view taken through 22 of Fig. 1. 3 is an end elevation shown partly broken away. Fig. 4 is a fragmentary perspective view of the grade frame shown detached and drawn to an enlarged scale.

The reference numeral 5 designatesthe back-end of the stove casing; 6 the front end thereof; and 7 and 8, respectively, the bottom and top walls of the same. 9 represents an oven which is inclosed by atop wall 10, a back wall 11, a bottom wall 12 and a front wall 13. The latter'is spaced from comprised of an ash-pit 14. and a fire-pot 16 thereabove; while the other of said oven walls are spaced from the respective' walls of the casing to afford communicating fines as at 12, to the casing front, as shown in Fig. 1 to have the flue 15". extend to the uptake flue 18 positioned in front of the casing wall 6 and having an opening 19 at the top for a chimney connection. By having the terminal flue 15" pass beneath the ash-pit much of the heat from the exhaust gases are transmitted through the partition 12 into the ash-pit.

Above the ash-plt 14 is ahorizontally ar- Specification of Letters Patent.

Application filed March 20,

and side members 21. The end members are 1909. Serial No. 484,680.

upturned flange 20 and'in the web portions 20 are pluralities of openings 22 making communication with the space below with that above. Said side members are prov1de d with series of spaced notches'21' to receive lugs 23 projecting from the opposite ends of the grate-bars 23' and .servlng as pivotal supports whereupon the grate-bars may be oscillated. Upon one end of each of the grate-bars is provided an'additional lug 23" severally socketed in spaced holes in a shaking-bar 24 which extends through an aperture 25 in the front wall 6 ofthe top edges laterally extending flanges 27 which project beyond the plane of the respective outer faces 26 of the liners, and at the juncture of the flanges with the liner bodies are nosings 28 which protrude beyond spective liners. Extending from the liner faces 26' are studs 30 serving to maintain the liners at their. bottoms in contact with clear of the openings .22 in such members. The flange of the liner which is next to the casing front 6 serves to support the top end of the liner in spaced relation with respect to the front, while a like ofiice is rendered as to the other liner with respect to the oven-wall 13 by studs, such as 31.

By the aforedescribed devices wing compartments 32 are provided which are 1n communication with the fire-box through the holes 29 and with the ash-pit by-the openings 22. Extending through the uptake flue 18 and making communication between the compartment- 14.- and the atmosphere exteriorly of the stove is an air-condult 33 and for which is provided a dam er plate 34.

' In operation,.the fire is bui t in the usual manner over the grate-bars23' and when it is properly burning the bars are mampulated through the medium of the shakerbar 24 to effect the inclination of the grateeach provided along its inner edge with an Patented May 2, 1911.

the opposite faces. Subjacent to said nos- --ings are holes 29 extending through the rethe flanges T20 of the respective members and bars into the positions in which they are illustrated in Fig. l and thus'closmg the interstices between the grate-bar's to prevent a direct flow of air into the fire-box from the ash-pit. The air'for combustion purposes, as indicated by the darts in Fig. 1, first enters the ash-pit 14, whence it passes through holes 22 into the wing compartments 32 and from the latter, by way of the holes 29, into the fire-box and above the bed of fuel to contribute to the burning of the consumable gases which are liberated therefrom.

The unconsumable gases flow, as indicated by thefeathered arrows in Fig. 1, at a high temperature from the fire-box by the lines 15, 15 and 15 and through the opening 17 1 into the smoke-uptake 18, whence they escape through the chimney connections. In taking the above described course the 'hot gases act against the stove top, or cover, 8 and also upon the three walls 10,11 and 12 to afford heat to the oven, and therebeyond contacting with the walls 12. and 6 and also impinging against the walls of the conduit 33. The heating of the walls of the ash-pit 14 and of the said conduit effect the heating of the air which flows through the latter into and through this compartment which together with the heat absorbed from theliners 26, will effect the raising of the tem perature of the air as supplied to the firebox to readily combine with the combustible products of the fuel and maintain a fire of relatively high efficiency. By heating the air prior to mingling with the volatile fuelgases, such gases are notchilled to any appreciable extent and consequently the combustion is unimpaired. I

The advantages of the invention reside principally in the cooperation with a grate which is adapted to be closed against the passage of air therethrough tocause the air for combustive purposes to pass into the fire above the fuel, of the means for heating such air through subjecting the same tothe residual heat from the 'fire and subsequent to the utilization of such heat as is employed in 'cookin operations.

Having described my invention, what I claim, is-

1. In a stove, an'oven, a fire box arrangedbox establishing communication between the ash pit and the upper part of ,the firebox by way of said winged compartments, av flue communicating with the atmosphere for conveying air to said-ash pit, and means in connection with the walls of said oven to provide flues for conducting the products of combustion against the outside of the first-mentioned fiue for heating it.

2. In 'a stove, the combination with an oven, a firebox and an ash-pit arranged at' one end of said oven, and means in connection with the'walls of the oven to provide flues for conducting the products of combustion from the fire box of a grate adapted to be adjusted to prevent the passage of air therethrough, liners within said firebox and arranged to afford compartments upon opposite sides of the firebox which respectively communicate with both the ash-pit and the firebox, an uptake connection. communicating with the flues, and an air conduit extending through said uptake connection and a'i'ranged to be .exteriorly engaged by the gases escaping through said uptake connec'tion and leading to the ash pit.

I FRANK S. LANG.

e Witnesses I a v Pmnnn BARNES,

G. O. HQWARD. 

